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server/storage/backend/config_linux.go
34 строки
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Marek Siarkowicz
server: Create storage package and move mvcc files to it
12 июл 2021, 16:37
12 июл 2021, 16:37
5e40a8b
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// Copyright 2015 The etcd Authors // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package backend import ( "syscall" bolt "go.etcd.io/bbolt" ) // syscall.MAP_POPULATE on linux 2.6.23+ does sequential read-ahead // which can speed up entire-database read with boltdb. We want to // enable MAP_POPULATE for faster key-value store recovery in storage // package. If your kernel version is lower than 2.6.23 // (https://github.com/torvalds/linux/releases/tag/v2.6.23), mmap might // silently ignore this flag. Please update your kernel to prevent this. var boltOpenOptions = &bolt.Options{ MmapFlags: syscall.MAP_POPULATE, NoFreelistSync: true, } func (bcfg *BackendConfig) mmapSize() int { return int(bcfg.MmapSize) }